Hot-Dip Galvanized Steel Coil (GI)

Home > Products > Hot-Dip Galvanized Steel Coil

Brief of Product
Hot-Dip galvanized steel coil is made by dipping hot/cold rolled steel into molten zinc tank of 460℃ to coat a layer of Zinc on steel coil to give the corrosion resistance function.

Product Features
Zinc coating layer has different structures. Galvanized Steel product has the ability of preventing rusting and corrosion pit. However, Zinc is likely to become white rust under humid environment, so galvanized steel coil is usually applied with anti-rust oil or chromatizing treated to prevent white rust. We can get Regular spangle, Minimized Spangle, Zero Spangle or Extra-Smooth Spangle by different processes.

 

 

Uses of Products

• Building Materials
  Floor deck, Ceiling, Conduit, Ventilation pipe, Balcony, Warehouse, Roof, Partition, Beam, Steel frame, Wiring panel, Wall, Sun shield canopy, Gutter, Window frame, Fence, Scaffolding, Air duct works, Underground channel, Indoor decoration, Steel rolling door.
• Electric Appliance
  Stove, Washing machine, Refrigerator, Junction box, Motor cap, Dehumidifier, Electric heater, roaster, Lighting equipment, Fluorescent lamp cover, Freezer, Air regulator, Video recorder, Water heater, Shell of microwave.
• Transportation Industry
  Interior panel of vehicle, Rear seat panel of bus and truck, Transportation system, Oil tank, Road sign, Road rail, Cargo container, Air purifier, Acoustic barrier.
• Agricultural Equipment
  Large barn, Agricultural dryer, Water tank, Irrigation channel, Hoarding house, Greenhouse, Silo, stable, Feeder, Hopper container, Agricultural equipment.
• Furniture and others
  Automatic vending machine, Funnel, Office equipment, Amusement equipment, Solar energy collector, Garage, Tool-Kit box, Steel furniture, Bucket, Interior equipment of sauna, Can.

 

Type symbols and mechanical property of hot dip galvanized steel

Type Symbol of Hot -Dip Galvanized Steel JIS G3302		Min. Yield Point N/mm2	Min. Tensile Strength N/mm2	Min. Elongation %						Uses
				Nominal Thickness mm (t)
Cold rolled base metal	Hot rolled base metal			0.25≤ t<0.4	0.4≤ t<0.6	0.6≤ t<1.0	1.0≤ t<1.6	1.6≤ t<2.5	t≥2.5
SGCC	SGHC	205	270	---	---	---	---	---	---	Commercial
SGCH	---	---	---	---	---	---	---	---	---	Full-hard
SGCD1	---	---	270	---	34	36	37	38	---	Drawing
SGC340	---	245	340	20	20	20	20	20	20	Structural
SGC400	---	295	400	18	18	18	18	18	18	Structural
SGC440	---	335	440	18	18	18	18	18	18	Structural
SGC490	---	365	490	16	16	16	16	16	16	Structural
SGC570	---	560	570	---	---	---	---	---	---	Structural

ASTM Designation	Min. Yield Point ksi(MPa)	Min. Tensile Strength ksi(MPa)	Min. Elongation %	Uses
A653(M) CS Type A,B,C	---	---	---	Commercial
A653(M) FS Type A,B	---	---	---	Forming
A653(M) DDS Type A	---	---	---	Drawing
A653(M) SS Grade33(230)	33(230)	45(310)	20	Structural
A653(M) SS Grade37(255)	37(255)	52(360)	18	Structural
A653(M) SS Grade40(275)	40(275)	55(380)	16	Structural
A653(M) SS Grade50(340)	50(340)	65(450)	12	Structural
A653(M) SS Grade60(410)	60(410)	70(480)	Thickness≦71mm, EL≧8﹪ Thickness＞71mm, EL≧10﹪	Structural
A653(M) SS Grade80(550)	80(550)	82(570)	---	Structural

※A653(M) Indicates in Metric System

 

Type symbols table of hot dip galvanized steel

Spec.	JIS	CNS	ASTM
Type	GI	GI	GI
Specifications	SGCC	SGCC	A653(M)CS Type A
			A653(M)CS Type B
			A653(M)CS Type C
			A653(M)FS Type A
			A653(M)FS Type B
	SGCD1	SGCD1	A653(M)DDS
	---	SGCD2	---
	---	---	A653(M)SS Grade 33 (Gr.230)
	SGC340	SGC340	A653(M)SS Grade 37 (Gr.255)
	---	---	A653(M)SS Grade 40 (Gr.275)
	SGC400	SGC400	---
	SGC440	SGC440	A653(M)SS Grade 50 (Gr.340)
	SGC490	SGC490	A653(M)SS Grade 55 (Gr.380)
	---	SGC490M	A653(M)SS Grade 60(Gr.410)
	---	SGC540	---
	---	SGC540M	A653(M)SS Grade 70(Gr.480)
	SGC570	SGC570	A653(M)SS Grade 80(Gr.550)
	SGCH	SGCH	---